Reinforced vinyl chloride polymer compositions containing poly-neopentylene terephthalate

Abstract

Thermoplastic compositions based on mixtures of a vinyl chloride polymer and conventional reinforcing agents. The compositions contain a linear polyester, which is solid at room temperature and is compatible with the vinyl chloride polymer, as a processing assistant. The thermoplastic compositions may in particular be used for the manufacture of injection moldings.

We claim: 
     
       1. A reinforced vinyl chloride polymer composition containing (A) from 99 to 50 parts by weight of a homopolymer of vinyl chloride or a copolymer of vinyl chloride with up to 30 percent by weight of one or more copolymerizable monomers,   (B) from 1 to 50 parts by weight of a linear terephthalic acid-neopentylglycol polyester which is solid at room temperature and is compatible with the vinyl chloride polymer, with the proviso that the sum of A and B is 100,   (C) from 10 to 50 percent by weight, based on the sum of A and B, of a reinforcing agent and   (D) from 0 to 90 percent by weight, based on the sum of A and B, of one or more other fillers.   
     
     
       2. A reinforced vinyl chloride polymer composition as claimed in claim 1, wherein the polyester employed as component B has a melting point of 100° to 200° C and a weight-average molecular weight of 5,000 to 50,000. 
     
     
       3. A reinforced vinyl chloride polymer composition as claimed in claim 1, containing from 10 to 30 percent by weight of component B based on the sum of A and B. 
     
     
       4. A reinforced vinyl chloride polymer composition as claimed in claim 1, wherein the reinforcing agent is glass fibres. 
     
     
       5. A reinforced vinyl chloride polymer composition as claimed in claim 1, wherein the reinforcing agent is fibers of glass, carbon, talc, asbestos or gypsum or is glass beads. 
     
     
       6. A reinforced vinyl chloride polymer composition as claimed in claim 1, wherein the reinforcing agent is a mat of continuous glass filaments.